When We Believed in Mermaids: A Novel

An Amazon Charts, Washington Post, Wall Street Journal, and USA Today bestseller.

From the author of The Art of Inheriting Secrets comes an emotional new tale of two sisters, an ocean of lies, and a search for the truth.

Her sister has been dead for fifteen years when she sees her on the TV news...

Josie Bianci was killed years ago on a train during a terrorist attack. Gone forever. It's what her sister, Kit, an ER doctor in Santa Cruz, has always believed. Yet all it takes is a few heart-wrenching seconds to upend Kit's world. Live coverage of a club fire in Auckland has captured the image of a woman stumbling through the smoke and debris. Her resemblance to Josie is unbelievable. And unmistakable. With it comes a flood of emotions--grief, loss, and anger--that Kit finally has a chance to put to rest: by finding the sister who's been living a lie.

After arriving in New Zealand, Kit begins her journey with the memories of the past: of days spent on the beach with Josie. Of a lost teenage boy who'd become part of their family. And of a trauma that has haunted Kit and Josie their entire lives.

Now, if two sisters are to reunite, it can only be by unearthing long-buried secrets and facing a devastating truth that has kept them apart far too long. To regain their relationship, they may have to lose everything.

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Published Jul 16, 2019

352 pages

Average rating: 7.45

384 RATINGS

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What Bookclubbers are saying about this book

✨ Summarized by Bookclubs AI

Readers say *When We Believed in Mermaids* is an emotionally rich novel with compelling characters and lyrical settings, praised for its vivid backsto...

K Olson
Jan 14, 2025
6/10 stars
This book was more chick-lit and romance than the mystery I thought it would be, so in that regard I was disappointed. Would make a good beach read.
KikiStoneCreek
Jun 03, 2023
10/10 stars
It's been a long time since a book made me cry...

Or stay up all night to finish reading it! The characters in this book are so perfectly drawn that you feel what they're feeling, and see how they're seeing their life and the lives of those they love and have loved in the past.

This book makesi it onto my "highly recommended" list, the first for 2021!
Mary Pat Holt
Feb 05, 2026
6/10 stars
This book was a solid read for me. Based on other reviews, I was expecting this be a gripping, 5 star phenomenal story. Here's the basic set up: Kit is an ER doctor in Santa Cruz. Her sister, Josie, has been dead for 15 years after a terrorist train attack. Yet, Kit sees a live coverage of a fire in New Zealand and sees a woman who bears an uncanny resemblance to her sister. Could Josie really be alive after all these years? If so, why hasn't she contacted any of her family?
Told in alternating voices of Kit and Josie (Mari), the chapters tell the story of the 2 girls and their past growing up in CA. I really liked the writing style and how the past was sprinkled into the story and eventually the storylines merge. I enjoyed the back story so much more; their crazy childhood growing up surfing in CA, sleeping on the beach, and the lost boy who became a part of their family. I liked the love interest story of Javier for Kit. I didn't like that the sisters reunion happened so late in the story. There were too many buried secrets (which are revealed) but are they able to move forward and forgive the betrayal of the past? I also didn't like the subplot of the murder in the house that Mari and her husband bought. Who cares? It didn't add anything to the story. It just fizzled out. The ending seemed very rushed to me.
KelSpinski
Jan 09, 2026
6/10 stars
Interesting story. Two sisters growing up and growing apart. Coming of age, losing touch and reuniting.
Tezriana
Mar 24, 2025
8/10 stars
I loved the in-depth descriptions of the locations and the food. Although there is some dark subject matter, overall I felt like I went on a mini-vacation to a gorgeous tropical island, had a romantic rendevous, and was back at work on Monday. It was a pretty quick read for me. I'd say this book is about love and forgiveness, the walls we put up to protect our hearts, and how those walls affect everyone around us.

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